Counterweight for an excavator



FIG. 1 is a rear elevational of a counterweight for an excavator, embodying our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top, rear and right side perspective view thereof.

The broken line showing of the excavator is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a counterweight for an excavator, as shown and described. 